Android: center gridview horizontally

Question

I need to center grid view horizontally in my android layout.xml. I have searched google for quite a while but didnt succeed in finding an answer.

I can only change

Answer 1

Probably I am really late, but if you came to this question (as I did), this is what I've done to solve the problem:

My GridView is centred in the vertical, the other two TextView are on the Top and Button-Right.

More info: RelativeLayout, Positioning Views